基于Π-S复合谐振的ECPT系统及其调谐控制

doi:10.19595/j.cnki.1000-6753.tces.160233

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Abstract Electric-field coupled power transfer (ECPT) technology is a type of wireless power transmission based on high frequency electric field. To solve the conflict between high-voltage excitation need of the coupling structure and the low-voltage need of switches in the high-frequency power-conversion link, this paper proposed a new topological structure with Π-S composite resonant network for ECPT system. This structure consists a Π-CLC resonant circuit on the transmitter and a S-type resonant circuit on the receiver. Based on the analysis of the Π-CLC resonant circuit, this paper presented the parameter configuration method to boost the voltage between transmitter plates. Aiming at the decrease of ECPT system transmission performance caused by the variation of transmission distance, this paper also proposed a stepless tuning method based on phased-inductor. It makes the system work at resonant state when the transmission distance varies in the range of 1mm to 5mm, and also increases the power factor and the system stability. Simulation and experimental results verify the effectiveness and validity of the proposed topology and tuning method.

Key words： Wireless power transmission electric-field coupled stepless tuning resonant circuit

Received: 26 February 2016 Published: 05 March 2018

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TM724

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	Su Yugang
	Ren Dan
	Xie Shiyun
	Zhao Yuming
	Dai Xin

Cite this article:

Su Yugang,Ren Dan,Xie Shiyun等. Electric-Field Coupled Power Transfer System with Π-S Composite Resonant Network and Its Tuning Control[J]. Transactions of China Electrotechnical Society, 2018, 33(4): 781-790.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.160233 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I4/781

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